As someone with early-stage Parkinson's, I was happy to see the disease referred to in Linda Carroll's article on pain and the placebo effect [“This Is Your Brain on Placebo,” May/June 2006]. And I hope you'll follow up with more in-depth exploration of the implications of placebo for Parkinson's. I'd certainly rather meditate, visualize, or do real-time brainscan biofeedback training for dopamine release than take L-dopa with its dyskinesia and other side effects.
Billy Ray Boyd
San Francisco, Calif.